The database contains all mechanical timepieces ("chronomètres-mécaniques") submitted under the wristwatch category ("chronomètres-bracelet") to the observatory competition in Neuchatel, Switzerland ("Le Concours chronométrique de l`Observatoire de Neuchâtel") from 1945 to 1967 and that subsequently passed the stringent tests and became certified as an observatory chronometer and therefore received a "Bulletin de Marche" from the observatory.

The database offers instant search and multi-column ordering - e.g. enter the serial number found on an observatory certified chronometer movement in order to receive more information like the N-score and the name of the "Régleur" - You may also enter other queries concerning the manufacturer etc.
Note: Quarz and other electrical resonators ("chronomètres-électroniques") which were submitted to the competition from ´64 -´67 were excluded.